ISBN in all languages in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Gray Code Decoder Gray Code Encoder Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Gray Code Decoder Gray Code Encoder Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 721st jmerle 🇳🇱 768 115 10ms 22 Jan 2022 721st PiterAnnema 768 115 19ms 23 Mar 2022 721st AGoyet 768 115 11ms 29 Jun 2022 721st Eilonlif 🇮🇱 768 115 12ms 11 Sep 2022 721st IsmaelGSerrano 768 115 12ms 2 Nov 2022 721st bobbysq 768 115 11ms 22 Jan 2023 721st msbranicky 768 115 10ms 25 Jul 2023 721st ArenaGrenade 768 115 11ms 19 Feb 2024 721st NickTheEASDude 🇺🇸 768 115 10ms 15 May 2024 721st dokutan 768 115 10ms 13 Aug 2024 721st maxgodfrey2004 🇨🇦 768 115 10ms 8 Jan 2025 721st Pyroan 768 115 11ms 21 Feb 2025 721st chartung17 768 115 10ms 24 Mar 2025 734th edsrzf 🇳🇿 767 107 80ms 28 Jun 2025 735th GrayJoKing 🇦🇺 767 126 458ms 1 Mar 2022 736th jerrandolph 767 174 327ms 20 Oct 2023 737th CatsAreFluffy 766 57 57ms 9 Jan 2023 737th xsot 🇸🇬 766 57 54ms 2 Feb 2024 739th DialFrost 🇸🇬 766 71 36ms 26 Dec 2024 740th DialFrost 🇸🇬 766 133 7ms 11 Dec 2024 741st annaproxy 766 134 15ms 24 Dec 2022 742nd kejcao 🇨🇦 765 147 152ms 3 Aug 2024 743rd Andrey-Plotnikov 764 93 12ms 21 Jun 2025 743rd Protothor 764 93 11ms 9 Jul 2025 745th retrohun 764 121 1ms 30 Dec 2022 745th abc7-12 764 121 1ms 26 Jun 2024 747th Shanethegamer 🇺🇸 763 73 292ms 14 Jun 2024 748th DialFrost 🇸🇬 763 114 2ms 1 Nov 2024 749th MeWhenI 🇻🇦 763 128 8ms 21 Jul 2023 750th edsrzf 🇳🇿 762 132 43ms 31 Dec 2025 751st martinnorling 🇸🇪 761 116 11ms 18 Feb 2022 751st Indivicivet 761 116 12ms 9 May 2022 751st Bonjour27891 🇻🇳 761 116 11ms 15 Jul 2022 751st tri1212 🇻🇳 761 116 10ms 16 Jul 2022 751st MichalMarsalek 🇨🇿 761 116 11ms 30 Nov 2022 751st yzhs 🇩🇪 761 116 10ms 25 Jun 2023 751st Attero 🇸🇪 761 116 10ms 2 Jan 2024 751st RobertHoeh 761 116 11ms 9 Apr 2024 751st Mabeloid 🇳🇴 761 116 10ms 7 Oct 2024 751st rollershutter 761 116 10ms 24 Feb 2025 751st JOrE20 761 116 11ms 23 Feb 2026 762nd MeWhenI 🇻🇦 761 146 88ms 13 Nov 2022 762nd janbehrens 🇩🇪 761 146 89ms 23 Jun 2023 764th Shanethegamer 🇺🇸 760 108 93ms 13 Nov 2023 765th Yewzir 🇧🇪 760 135 8ms 16 Dec 2023 765th Maximizer02 760 135 7ms 24 Sep 2024 767th DialFrost 🇸🇬 760 142 2ms 14 Sep 2024 768th Ripick 759 121 360ms 11 Jul 2024 769th nwellnhof 🇩🇪 757 88 31ms 12 Jul 2022 770th c0d3-4-F00d 🇩🇪 757 122 2ms 21 Feb 2022 771st stackofbears 756 41 2ms 20 Feb 2022 771st akamayu-ouo 🇹🇼 756 41 2ms 8 Jul 2024 771st AlephSquirrel 756 41 2ms 8 Nov 2025 774th tomh1012 756 94 10ms 12 Mar 2026 775th albanian-laundromat 🇺🇸 756 133 42ms 7 Sep 2025 776th JOrE20 756 179 26ms 18 Feb 2026 777th tatzyr 🇯🇵 755 72 36ms 28 Dec 2024 778th CaedenHarper 🇨🇦 755 78 938ms 30 Sep 2025 779th emplv 🇱🇻 755 101 116ms 6 Dec 2022 780th CedricGebistorf 755 117 12ms 19 Feb 2022 780th sjrct 755 117 10ms 5 Aug 2024 780th FranklinJiaChen 755 117 10ms 10 Aug 2024 780th Artemis21 🇬🇧 755 117 12ms 21 Dec 2024 784th emgordon154 755 128 553ms 3 Jun 2025 785th elgan65536 🇺🇸 755 161 152ms 9 Nov 2023 786th edsrzf 🇳🇿 755 173 41ms 28 Jun 2025 787th Steffan153 🇫🇮 754 135 7ms 12 Mar 2023 788th emgordon154 753 95 135ms 15 Nov 2024 789th KrausRaus 🇺🇸 753 117 2ms 15 Oct 2023 790th iczelia 🇩🇪 751 123 1ms 24 Sep 2025 791st bac0id 751 148 99ms 3 Jul 2024 792nd DialFrost 🇸🇬 751 232 1,672ms 3 days ago 793rd Shanethegamer 🇺🇸 751 251 1,441ms 25 Jan 2025 794th Shanethegamer 🇺🇸 750 111 105ms 4 Dec 2025 795th tobeannouncd 750 150 144ms 20 Dec 2024 796th chlorobenzene12 749 116 2ms 26 Dec 2022 797th Tess2662 749 118 11ms 8 Sep 2022 797th CheeseCake628 🇳🇴 749 118 11ms 20 Mar 2023 797th randolchance 749 118 12ms 20 Mar 2023 797th jeff-at-tamer-dot-codes 🇺🇸 749 118 10ms 19 May 2023 First Prev 721–800 of 1,700 Next Last